Diameter: 32,000 miles acrossLocation: 7th planet from SunDistance from Sun: About 1.8 billion milesFirst Observed: 1781Cloud Top Temperature: -320° FahrenheitNumber of Moons: 27Orbital Period: 84 yearsCharacteristics: Its atmosphere is made up of methane, helium, and hydrogen gases. Clouds of methane ice crystals create its blue-green appearance and it has a core of silicate rock.Identity in Mythology: Uranus, the Greek god of the heavens